University of Twente Student Theses
Growth of silicene on Ag(111) studied with low energy electron microscopy
Acun, Adil (2013) Growth of silicene on Ag(111) studied with low energy electron microscopy.
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| Abstract: | The discovery of graphene and its properties is of big importance in the realm of science. Graphene exhibits exotic physical properties like the integer quantum Hall effect, the Klein paradox and a linear dispersion relation. The fact that silicon has similar properties as carbon has motivated the growth and study of a graphene-like material called silicene. To date only scanning tunneling microscopy (STM), atomic force microscopy (AFM), low energy electron diffraction (LEED) and angle-resolved photoemission spectroscopy (ARPES) experiments have been performed on silicene on Ag(111). Real-time imaging of changes in surface topography through surface diffusion, growth and phase transitions were not performed yet. Here, low energy electron microscopy (LEEM) has been used as a technique to study changes in surface topography. We find that a phase transition from silicene to sp3 hybridized silicon inhibits the growth of a second silicene layer. Furthermore, we conclude that it is not possible to cover a Ag(111) surface entirely with silicene. |
| Item Type: | Essay (Master) |
| Faculty: | TNW: Science and Technology |
| Subject: | 33 physics |
| Programme: | Applied Physics MSc (60436) |
| Link to this item: | https://purl.utwente.nl/essays/64643 |
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